From: Jin Liu <jin.liu@corigine.com>
To: dev@dpdk.org
Cc: niklas.soderlund@corigine.com, Jin Liu <jin.liu@corigine.com>,
Yinjun Zhang <yinjun.zhang@corigine.com>,
Chaoyong He <chaoyong.he@corigine.com>
Subject: [PATCH v4 03/13] net/nfp: remove pessimistic limit
Date: Thu, 23 Jun 2022 04:26:05 +0200 [thread overview]
Message-ID: <20220623022615.3628093-4-jin.liu@corigine.com> (raw)
In-Reply-To: <20220623022615.3628093-1-jin.liu@corigine.com>
Multiple writes cause intermediate pointer values that do not
end on complete TX descriptors.
The QCP peripheral on the NFP provides a number of access
modes. In some access modes, the maximum amount to add must
be restricted to a 6bit value. The particular access mode
used by _nfp_qcp_ptr_add() has no such restrictions, so the
"NFP_QCP_MAX_ADD" test is unnecessary.
Note that trying to add more that the configured ring size
in a single add will cause a QCP overflow, caught and handled
by the QCP peripheral.
Signed-off-by: Jin Liu <jin.liu@corigine.com>
Signed-off-by: Yinjun Zhang <yinjun.zhang@corigine.com>
Signed-off-by: Chaoyong He <chaoyong.he@corigine.com>
Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
---
drivers/net/nfp/nfp_common.h | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)
diff --git a/drivers/net/nfp/nfp_common.h b/drivers/net/nfp/nfp_common.h
index 8db5ec23f8..49d6bb6ad5 100644
--- a/drivers/net/nfp/nfp_common.h
+++ b/drivers/net/nfp/nfp_common.h
@@ -44,9 +44,6 @@ struct nfp_net_adapter;
/* The offset of the queue controller queues in the PCIe Target */
#define NFP_PCIE_QUEUE(_q) (0x80000 + (NFP_QCP_QUEUE_ADDR_SZ * ((_q) & 0xff)))
-/* Maximum value which can be added to a queue with one transaction */
-#define NFP_QCP_MAX_ADD 0x7f
-
/* Interrupt definitions */
#define NFP_NET_IRQ_LSC_IDX 0
@@ -307,8 +304,6 @@ nn_cfg_writeq(struct nfp_net_hw *hw, int off, uint64_t val)
* @q: Base address for queue structure
* @ptr: Add to the Read or Write pointer
* @val: Value to add to the queue pointer
- *
- * If @val is greater than @NFP_QCP_MAX_ADD multiple writes are performed.
*/
static inline void
nfp_qcp_ptr_add(uint8_t *q, enum nfp_qcp_ptr ptr, uint32_t val)
@@ -320,12 +315,7 @@ nfp_qcp_ptr_add(uint8_t *q, enum nfp_qcp_ptr ptr, uint32_t val)
else
off = NFP_QCP_QUEUE_ADD_WPTR;
- while (val > NFP_QCP_MAX_ADD) {
- nn_writel(rte_cpu_to_le_32(NFP_QCP_MAX_ADD), q + off);
- val -= NFP_QCP_MAX_ADD;
-}
-
-nn_writel(rte_cpu_to_le_32(val), q + off);
+ nn_writel(rte_cpu_to_le_32(val), q + off);
}
/*
--
2.27.0
next prev parent reply other threads:[~2022-06-23 2:27 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-02 1:52 [PATCH 00/14] Add support of NFP3800 chip and firmware with NFDk Jin Liu
2022-06-02 1:52 ` [PATCH 01/14] net/nfp: change the coding style Jin Liu
2022-06-02 22:52 ` Ferruh Yigit
2022-06-14 8:50 ` Kevin Liu
2022-06-02 1:52 ` [PATCH 02/14] net/nfp: remove unnecessary forward function declaration Jin Liu
2022-06-02 1:52 ` [PATCH 03/14] net/nfp: remove pessimistic limit Jin Liu
2022-06-02 1:52 ` [PATCH 04/14] net/nfp: rename set MAC function Jin Liu
2022-06-02 1:52 ` [PATCH 05/14] net/nfp: rename function and struct Jin Liu
2022-06-02 1:52 ` [PATCH 06/14] net/nfp: support NFP3800 card Jin Liu
2022-06-02 22:52 ` Ferruh Yigit
2022-06-14 8:50 ` Kevin Liu
2022-06-02 1:52 ` [PATCH 07/14] net/nfp: support NFDK firmware Jin Liu
2022-06-02 22:53 ` Ferruh Yigit
2022-06-14 8:49 ` Kevin Liu
2022-06-14 9:21 ` Ferruh Yigit
2022-06-14 9:30 ` Kevin Liu
2022-06-02 1:52 ` [PATCH 08/14] net/nfp: structure adjustment Jin Liu
2022-06-02 22:54 ` Ferruh Yigit
2022-06-14 8:49 ` Kevin Liu
2022-06-02 1:52 ` [PATCH 09/14] net/nfp: nfdk netdev option and queue function Jin Liu
2022-06-02 1:53 ` [PATCH 10/14] net/nfp: add queue stop and close helper function Jin Liu
2022-06-02 1:53 ` [PATCH 11/14] net/nfp: nfdk stop and close function Jin Liu
2022-06-02 1:53 ` [PATCH 12/14] net/nfp: move macro from C file to head file Jin Liu
2022-06-02 1:53 ` [PATCH 13/14] net/nfp: nfdk packet xmit function Jin Liu
2022-06-02 1:53 ` [PATCH 14/14] net/nfp: modify RSS logic Jin Liu
2022-06-02 22:56 ` Ferruh Yigit
2022-06-14 8:50 ` Kevin Liu
2022-06-02 22:51 ` [PATCH 00/14] Add support of NFP3800 chip and firmware with NFDk Ferruh Yigit
2022-06-14 8:48 ` Kevin Liu
2022-06-16 2:39 ` [PATCH v2 00/15] " Jin Liu
2022-06-16 2:39 ` [PATCH v2 01/15] doc: update release note Jin Liu
2022-06-16 15:04 ` Ferruh Yigit
2022-06-16 2:39 ` [PATCH v2 02/15] doc: update nfp documentation Jin Liu
2022-06-16 15:04 ` Ferruh Yigit
2022-06-16 2:39 ` [PATCH v2 03/15] net/nfp: change the coding style Jin Liu
2022-06-16 2:39 ` [PATCH v2 04/15] net/nfp: remove unnecessary forward function declaration Jin Liu
2022-06-16 2:39 ` [PATCH v2 05/15] net/nfp: remove pessimistic limit Jin Liu
2022-06-16 2:39 ` [PATCH v2 06/15] net/nfp: rename set MAC function Jin Liu
2022-06-16 2:39 ` [PATCH v2 07/15] net/nfp: rename function and struct Jin Liu
2022-06-16 2:39 ` [PATCH v2 08/15] net/nfp: support NFP3800 card Jin Liu
2022-06-16 15:04 ` Ferruh Yigit
2022-06-16 2:39 ` [PATCH v2 09/15] net/nfp: support firmware with NFDk Jin Liu
2022-06-16 2:39 ` [PATCH v2 10/15] net/nfp: structure adjustment Jin Liu
2022-06-16 2:39 ` [PATCH v2 11/15] net/nfp: nfdk netdev option and queue function Jin Liu
2022-06-16 2:39 ` [PATCH v2 12/15] net/nfp: add queue stop and close helper function Jin Liu
2022-06-16 2:39 ` [PATCH v2 13/15] net/nfp: move macro from C file to head file Jin Liu
2022-06-16 2:39 ` [PATCH v2 14/15] net/nfp: nfdk packet xmit function Jin Liu
2022-06-16 2:39 ` [PATCH v2 15/15] net/nfp: modify RSS logic Jin Liu
2022-06-16 15:06 ` [PATCH v2 00/15] Add support of NFP3800 chip and firmware with NFDk Ferruh Yigit
2022-06-17 9:34 ` [PATCH v3 00/13] " Jin Liu
2022-06-17 9:34 ` [PATCH v3 01/13] net/nfp: change the coding style Jin Liu
2022-06-17 9:34 ` [PATCH v3 02/13] net/nfp: remove unnecessary forward function declaration Jin Liu
2022-06-17 9:34 ` [PATCH v3 03/13] net/nfp: remove pessimistic limit Jin Liu
2022-06-17 9:34 ` [PATCH v3 04/13] net/nfp: rename set MAC function Jin Liu
2022-06-17 9:34 ` [PATCH v3 05/13] net/nfp: rename function and struct Jin Liu
2022-06-17 9:34 ` [PATCH v3 06/13] net/nfp: support NFP3800 card Jin Liu
2022-06-17 9:34 ` [PATCH v3 07/13] net/nfp: support firmware with NFDk Jin Liu
2022-06-17 9:34 ` [PATCH v3 08/13] net/nfp: structure adjustment Jin Liu
2022-06-17 9:34 ` [PATCH v3 09/13] net/nfp: nfdk netdev option and queue function Jin Liu
2022-06-17 9:34 ` [PATCH v3 10/13] net/nfp: add queue stop and close helper function Jin Liu
2022-06-17 9:34 ` [PATCH v3 11/13] net/nfp: move macro from C file to head file Jin Liu
2022-06-17 9:34 ` [PATCH v3 12/13] net/nfp: nfdk packet xmit function Jin Liu
2022-06-22 16:03 ` Thomas Monjalon
2022-06-22 16:29 ` Ferruh Yigit
2022-06-17 9:34 ` [PATCH v3 13/13] net/nfp: modify RSS logic Jin Liu
2022-06-17 13:33 ` [PATCH v3 00/13] Add support of NFP3800 chip and firmware with NFDk Ferruh Yigit
2022-06-23 2:26 ` [PATCH v4 " Jin Liu
2022-06-23 2:26 ` [PATCH v4 01/13] net/nfp: change the coding style Jin Liu
2022-06-23 2:26 ` [PATCH v4 02/13] net/nfp: remove unnecessary forward function declaration Jin Liu
2022-06-23 2:26 ` Jin Liu [this message]
2022-06-23 2:26 ` [PATCH v4 04/13] net/nfp: rename set MAC function Jin Liu
2022-06-23 2:26 ` [PATCH v4 05/13] net/nfp: rename function and struct Jin Liu
2022-06-23 2:26 ` [PATCH v4 06/13] net/nfp: support NFP3800 card Jin Liu
2022-06-23 2:26 ` [PATCH v4 07/13] net/nfp: support firmware with NFDk Jin Liu
2022-06-23 2:26 ` [PATCH v4 08/13] net/nfp: structure adjustment Jin Liu
2022-06-23 2:26 ` [PATCH v4 09/13] net/nfp: nfdk netdev option and queue function Jin Liu
2022-06-23 2:26 ` [PATCH v4 10/13] net/nfp: add queue stop and close helper function Jin Liu
2022-06-23 2:26 ` [PATCH v4 11/13] net/nfp: move macro from C file to head file Jin Liu
2022-06-23 2:26 ` [PATCH v4 12/13] net/nfp: nfdk packet xmit function Jin Liu
2022-06-23 2:26 ` [PATCH v4 13/13] net/nfp: modify RSS logic Jin Liu
2022-06-23 9:11 ` [PATCH v4 00/13] Add support of NFP3800 chip and firmware with NFDk Ferruh Yigit
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